Wood-worker



(No Model.)

W. H. DOANE.

WOOD WORKER.

Patented'NOv. 13

nirrn Brarns1 4 e'rnnrr aries,

VILLIAM H. DOANE, OF GNCINNATI, OHIO.

weleens/cansa.

SPECIFICATION forming part o1' Letters Patent No. 392,591, datedNovember 13:, 1888.

Application filed July 9, 1888. Serial No. 279,370. No model.)

To @ZZ whom it may concern:

Be it known that I, WILLIAM H. DOANE, a citizen of the United States,residing at Ciucinnati, Ohio, have invented new and useful Improvementsin Wood-lVorkers, of which the following is a specification. j

My invention relates to a class of woodworkers 7 in which thecutter-arbor is carried in three bearings-two terminal beyond thecutter-head and driving-pulley, respectively, and one intermediatebetween the cutter-head and driving-pulley,its obj ect being toprovide aconstruction' by which the cutter-arbor may be shifted to adjust thecutter laterally in relation to the work, yet at the same time preservethe necessary rigidity of the arbor and prevent a ragged or unequalaction of the cutter-head.

In another application of even date herewith I have shown a constructionto this end, in which the two cutterlhead journal-bearings, or all threebearings, are rigid projections of an adjustable box-frame with longsliding surfaces in different planes for obtaining rigidity; but in thepresent invention I seek to avoid the expense of such construction andto accomplish the desired end by making the bear ings independent andpreserving one of the two rear bearings absolutely iixed to thebedframe,while the other is adjustable to shift the arbor and cutter,all as hereinafter more fully set forth.

Mechanism illustrating my invention is exhibited in the followingdrawings, in which- Figure 1 is a cross-elevation showing a conistruction in which the outer or terminal'bearings are fixed and thecenter bearing is alone adjustable; Fig. 2, a rear elevation; Fig. 3, aplan View of the same machine, and Fig. 1, apartial crosselevation of aconstruction in which the central bearing is dxed and the outer bearingis adjustable.

Referring now to the drawings,in which the letters of reference indicatethe parts herein described, A designates the supporting frame or bed ofthe machine, and A B C designate, respectively, the rcar,central, andfront bearings of the cutter-mandrel E, the latter carrying thecutter-headD and drive-pulley l?. The cutter-head D operates in theinterval between two work-carrying platens, F F', which in the presentcase are shown mounted upon supporting guide-blocks G H, by which theyare adjustable. These features need not be further described here, asthey constitute no part of my present invention, and are introducedmerely to define the class of machines to which my invention is applied.

The rear bearing, A, Figs. l, 2, and 3, is an upward xed extension ofthe base-frame or bed A of the machine The front bearing, C, 6o is alsorelatively fixed in position, but is detachable from the bed-frame,being held by a screw-clamp, C', operated by a handle or lever, O2. Itmay be removed from its position on the bed-frame and slipped from thearbor endwise when necessary to remove the cutterhead.

The arbor is arranged to be shifted longitudinally in its front and rearterminal bearings as impelled by the central bearing, B, 7o which ishorizontally adjustable upon the bedframe A in gibs B. The centralbearing acts as a shifting-clutch by engagement at one side against thehub of the drive-pulley., and at the other against a collar, E, securedupon the arbor, being at the same time a bearing for the arbor andrelatively rigid when stationary. The bearing B is formed with anenlarged base, B2, carried in planed ways upon the bedframe, and securedin its sliding bearing by 8o gibs B.

Centrally beneath the bearing B projects a tongue, J, engaging anadjusting-screw, I, earried outward in a suitable socket in the rearwall of the bed-frame, and provided with a hand-wheel, I, by which meansthe adjustment is made.

It will be observed as the leading principle of the construction thatthe cutter-arbor is retained in two relatively fixed bearings at all 9otimes,while the third bearing is alone adjustable. The advantage of thisis that the proper alignment of the arbor is preserved and ispractically independent of any lost motion in the intermediate ormovable bearing, because of the xedness of the other bearings. As analternative embodying the same principles, and on some accountspreferable, l have shown in Fig. 4 a construction in which the bearingsB and C are fixed, while the rear terminal 10o bearing, A, is madeadjustable inthe manner already described. The fixed bearings are thusbrought closer together and in such relations to the cutter as topreserve the utmost rigidity While in action.

I claim as myinvention and desire to secure by Letters Patent of theUnited States- In a Wood-Worker7 in combination with the cutter-arborand a detachable but relatively fixed front bearing for the same, tWoother independent bearings, one intermediate between the cutter-head anddrive-pulley and one terminal beyond the drivepulley-one of whichsupplemental bearings is positively Xed and the other adjustable toshift the a1'- bor and cutter-head laterally in relation to the Work,substantially as s et forth.

In testimony whereof I have hereunto set my hand in the presence of twosubscribing witnesses.

VILLIA M H. DOANE.

W itn esses:

L. M. Hosm, L. E. HosnA.

